Welcome to the G-SHOCK Master of G Frogman analog watches with composite straps. These watches are designed to provide high performance for divers. They offer durability and light weight with a thin resin center frame on the GWF-A1000XC model and carbon reinforced resin on the GWF-A1000C model. The composite straps are complemented by a buckle with extender for easy sliding over a wetsuit. These special Frogman watches don't compromise on style or color either. Sport the attractive blue ion-plated stainless steel bezel, with the seconds hand in vibrant, eye-catching yellow. You can also opt for a unique design with touches of color, from the orange coating on the laminated carbon bezel to the bright orange inset dial ring.

Basic information

Dimensions (L × W × H)

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56.7 × 51.7 × 19.7 mm

Weight

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145 g

Case and bezel material

Resin/Stainless steel

Carbon monocoque case

Strap

Stainless steel/resin composite strap

Double clasp, 1-pusher and triple-fold clasp

Assembly

Shock resistant

Magnetic field resistant

Carbon Core Guard structure

Water resistant

Water resistant to 200 meters ISO

Time setting

Radio-controlled watch, multiband 6 technology

Power supply and battery life

Tough Solar (solar powered)

Smartphone Link functions / Application connectivity

Smartphone Link function

Mobile Link (Bluetooth® wireless link)

Applications

CASIO WATCHES

Exterior

Glass

Spherical crystal

Sapphire crystal with anti-reflective coating

Crown

Screw-down crown

Surface treatment

Blue ion-plated bezel

Other

Neobrite

Watch functions

Diving function

Dive mode

Dive time: 1-second increments, up to 1:59'59

Surface time measurement: up to 24 hours

Log data: up to 30 records

World time

Dual time

27 time zones, local time change and automatic daylight saving time (DST) changeover

Stopwatch

1-second stopwatch

Measuring capacity: 23:59'59

Timer

Countdown timer

Measuring unit: 1 second

Countdown interval: 24 hours

Countdown start time setting range: 1 minute to 24 hours (1 second increments)

Alarm / time signal

Daily alarm

Illumination

LED light (super-illuminator)

Brightness

Light color

LED: white

Calendar

Full automatic calendar (up to the year 2099)

Hand initial position correction function

Automatic correction of the initial position of the hands

Energy saving function

Power saving (hands stop to save power when the watch is left in the dark)

Run time

Approximate battery operating time: 5 months with rechargeable battery (operating period with normal use without exposure to light after charging) 30 months with rechargeable battery (operating period when stored in total darkness with the power-saving function activated after full charge)

Accuracy

Accuracy: ±15 seconds per month (without signal calibration and Mobile Link function)

Other options

Hand change function (hands move for clear view on the dial).

Normal time indication:

Analog: 3 hands (hour, minute (hand moves every 5 seconds) and second), 3 dials (dual time, 24 hour dual time and day).

Date display

Date

Time setting details

Time calibration signals

Station name: DCF77 (Mainflingen, Germany)

Frequency: 77.5 kHz

Station name: MSF (Anthorn, England)

Frequency: 60.0 kHz

Station name: WWVB (Fort Collins, United States)

Frequency: 60.0 kHz

Station name: JJY (Fukushima, Fukuoka/Saga, Japan)

Frequency: 40.0 kHz (Fukushima)/60.0 kHz (Fukuoka/Saga)

Station name: BPC (Shangqiu city, Henan province, China)

Frequency: 68.5 kHz

Reception of time calibration signal

Automatic reception up to six* times a day (the rest of the automatic reception is canceled as soon as successful)

*Five times a day for the Chinese calibration signal

Manual reception